Installing libgbm-dev with Mesa from trixie-backports

[Konstantin Reich <reich-cv@yandex.ru>]

Hello,

I want to build a package from source (specifically, the latest version
of VCMI). For that I need libgbm-dev, but apt won't install it because I
have Mesa from trixie-backports. The dependency error is shown below.


As i understand, the libgbm-dev package in trixie requires libgbm1 (=
25.0.7-2), while my system has libgbm1 25.2.6-1~bpo13+1 (from
trixie-backports).


Can you help me resolve this? It seems common for backports users, but I
couldn't find a solution.




$sudo apt install libgbm-dev
Solving dependencies... Error!  
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

Unsatisfied dependencies:
 libgbm-dev : Depends: libgbm1 (= 25.0.7-2) but 25.2.6-1~bpo13+1 is to be installed
Error: Unable to correct problems, you have held broken packages.
Error: The following information from --solver 3.0 may provide additional context:
   Unable to satisfy dependencies. Reached two conflicting decisions:
   1. libgbm1:amd64=25.0.7-2 is not selected for install
   2. libgbm1:amd64=25.0.7-2 is selected as a downgrade because:
      1. libgbm-dev:amd64=25.0.7-2 is selected for install
      2. libgbm-dev:amd64=25.0.7-2 Depends libgbm1 (= 25.0.7-2)